On Monday officials in Wisconsin will announce a recount in that state, which Mr. Trump won, at the request of the Green Party and candidate Jill Stein. Mr. Trump’s tweets seem to be pushback at the claims among some Democrats and progressives (also made without evidence) of a rigged election in key swing states.

Mr. Trump alleged an even bigger fraud earlier Sunday, saying (again without proof) that “millions” of illegal immigrants had voted for Mrs. Clinton.

“In addition to winning the Electoral College in a landslide, I won the popular vote if you deduct the millions of people who voted illegally,” Mr. Trump said.

And in a sign that liberals and progressives are getting under his skin, he rebutted their frequent (and irrelevant) claim that Mrs. Clinton won the popular vote, which would somehow undermine Mr. Trump’s legitimacy.

“It would have been much easier for me to win the so-called popular vote than the Electoral College in that I would only campaign in 3 or 4-states instead of the 15 states that I visited. I would have won even more easily and convincingly (but smaller states are forgotten)!” he said over two tweets.